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<h1 id="release-notes-for-stm32g0xx-cmsis">Release Notes for <mark>STM32G0xx CMSIS</mark></h1>
<p>Copyright © 2018 STMicroelectronics<br />
</p>
<a href="https://www.st.com" class="logo"><img src="_htmresc/st_logo_2020.png" alt="ST logo" /></a>
</center>
<h1 id="purpose">Purpose</h1>
<p>This driver provides the CMSIS device files for the stm32g0xx products. This covers</p>
<ul>
<li>STM32G081/71/70xx devices</li>
<li>STM32G041/31/30xx devices</li>
<li><strong>STM32G0C1/B1/B0xx devices</strong></li>
<li><strong>STM32G061/51/50xx devices</strong></li>
</ul>
<p>This driver is composed of the descriptions of the registers under “Include” directory.</p>
<p>Various template files are provided to easily build an application. They can be adapted to fit applications requirements.</p>
<ul>
<li>Templates/system_stm32g0xx.c contains the initialization code referred as SystemInit.</li>
<li>Startup files are provided as example for IAR©, KEIL© and STM32CubeIDE©.</li>
<li>Linker files are provided as example for IAR©, KEIL© and STM32CubeIDE©.</li>
</ul>
</div>
<div class="col-sm-12 col-lg-8">
<h1 id="update-history">Update History</h1>
<div class="collapse">
<input type="checkbox" id="collapse-section6" checked aria-hidden="true"> <label for="collapse-section6" area-hidden="true">V1.4.1 / 17-June-2021 </label>
<div>
<h2 id="main-changes">Main Changes</h2>
<ul>
<li>Update to remove wrong bits defined for DMAMUX Req ID.</li>
<li>Protect Vector table modification following SRAM or FLASH preprocessor directive by a generic preprocessor directive : USER_VECT_TAB_ADDRESS.</li>
<li>Add new atomic register access macros in stm32g0xx.h file.</li>
<li>Add LSI maximum startup time datasheet value: LSI_STARTUP_TIME.</li>
<li>Update Licensing information and format
<ul>
<li>Add LICENSE.txt file</li>
<li>Remove License message from Release_Notes.html</li>
<li>Update header files with new license format</li>
</ul></li>
</ul>
<h2 id="contents">Contents</h2>
<ul>
<li>CMSIS devices files for stm32g0B0xx, stm32g0B1xx, stm32g0C1xx devices.</li>
<li>CMSIS devices files for stm32g050xx, stm32g051xx, stm32g061xx devices.</li>
<li>CMSIS devices files for stm32g030xx, stm32g031xx, stm32g041xx devices.</li>
<li>CMSIS devices files for stm32g070xx, stm32g071xx, stm32g081xx devices.</li>
</ul>
<h2 id="known-limitations">Known Limitations</h2>
<ul>
<li>None</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section5"  aria-hidden="true"> <label for="collapse-section5" area-hidden="true">V1.4.0 / 29-October-2020 </label>
<div>
<h2 id="main-changes-1">Main Changes</h2>
<h3 id="maintenance-release-and-product-update">Maintenance release and Product Update</h3>
<p>Official release for STM32G0xx CMSIS introducing <strong>stm32g0b0xx, stm32g0b1xx, stm32g0c1xx devices</strong> and <strong>stm32g050xx, stm32g051xx, stm32g061xx devices.</strong></p>
<p>Maintenance release for STM32G0xx CMSIS supporting stm32g030xx, stm32g031xx, stm32g041xx, stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
<p><strong>Additional features</strong></p>
<table>
<thead>
<tr class="header">
<th>Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>New CMSIS Drivers files to support STM32G0C1xx, STM32G0B1xx, STM32G0B0xx</td>
</tr>
<tr class="even">
<td>New CMSIS Drivers files to support STM32G061xx, STM32G051xx, STM32G050xx</td>
</tr>
<tr class="odd">
<td>Add CMSIS files for STM32CubeIDE and remove CMSIS files for SW4STM32</td>
</tr>
</tbody>
</table>
<p><strong>Fixed bugs list</strong></p>
<table>
<thead>
<tr class="header">
<th>Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>[G0 64K][Flash] page number field is too big on 64k</td>
</tr>
<tr class="even">
<td>Fix wrong I2C instance in macro IS_I2C_WAKEUP_FROMSTOP_INSTANCE()</td>
</tr>
<tr class="odd">
<td>Update to call SystemInit first in startup/Reset_Handler, so GCC code is similar to IAR/Keil</td>
</tr>
<tr class="even">
<td>Improve the startup code on GCC</td>
</tr>
<tr class="odd">
<td>correction for swapped for BORR and BORF bit fields</td>
</tr>
<tr class="even">
<td>G0 GCC startup file should use cortex M0+</td>
</tr>
<tr class="odd">
<td>Move FLASH_SIZE define from hal flash. h to cmsis device file</td>
</tr>
<tr class="even">
<td>Remove IS_TIM_SYNCHRO_INSTANCE macro from CMSIS</td>
</tr>
<tr class="odd">
<td>Constants RCC_CFGR_ shall be removed from CMSIS</td>
</tr>
<tr class="even">
<td>Rename SYSCFG_ITLINE2_SR_RTC_WAKEUP into SYSCFG_ITLINE2_SR_RTC to be aligned with RM</td>
</tr>
<tr class="odd">
<td>Correction of DMAMUX_CxCR_DMAREQ_ID that should be 0x7F instead of 0xFF</td>
</tr>
<tr class="even">
<td>[Codespell] minor typo correction</td>
</tr>
<tr class="odd">
<td>[FOSS-Audit] Change CMSIS BSD headers to Apache license</td>
</tr>
<tr class="even">
<td>[MISRA] Add U suffix for bit configuration of the Cortex-M0+ Processor</td>
</tr>
<tr class="odd">
<td>[Value Line] Remove EXTI_EMR1_EM17 &amp; EXTI_EMR1_EM18 bits (COMP1/COMP2 N/A on VL)</td>
</tr>
<tr class="even">
<td>[Value Line] TIM2 is not supported on G0 value line, so remove it from IS_TIM_CCX_INSTANCE() and IS_TIM_OCCS_INSTANCE() macros</td>
</tr>
</tbody>
</table>
<h2 id="contents-1">Contents</h2>
<p>-<strong>CMSIS devices files for stm32g0B0xx, stm32g0B1xx, stm32g0C1xx devices.</strong></p>
<p>-<strong>CMSIS devices files for stm32g050xx, stm32g051xx, stm32g061xx devices.</strong></p>
<p>-CMSIS devices files for stm32g030xx, stm32g031xx, stm32g041xx devices.</p>
<p>-CMSIS devices files for stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
<h2 id="known-limitations-1">Known Limitations</h2>
<p>None</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section4" aria-hidden="true"> <label for="collapse-section4" aria-hidden="true">V1.3.0 / 25-June-2019 </label>
<div>
<h2 id="main-changes-2">Main Changes</h2>
<h3 id="maintenance-release">Maintenance release</h3>
<p>Maintenance release for STM32G0xx CMSIS supporting stm32g030xx, stm32g031xx, stm32g041xx, stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
<p><strong>Fixed bugs list</strong></p>
<table>
<thead>
<tr class="header">
<th>Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>Remove all DMAMUX register/bit definition related to internal debug features</td>
</tr>
</tbody>
</table>
<h2 id="contents-2">Contents</h2>
<p>CMSIS devices files for stm32g030xx, stm32g031xx, stm32g041xx devices.</p>
<p>CMSIS devices files for stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
<h2 id="known-limitations-2">Known Limitations</h2>
<p><strong>Requirements not met or planned in a forthcoming release</strong></p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;">[MISRAC2012-Rule-8.9_b] Global variable APBPrescTable is only referenced from a single function</td>
</tr>
</tbody>
</table>
<h2 id="development-toolchains-and-compilers">Development Toolchains and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V8.20.2</li>
<li>RealView Microcontroller Development Kit (MDK-ARM) toolchain V5.25</li>
<li>System Workbench STM32 (SW4STM32) toolchain V2.7.2</li>
</ul>
<h2 id="supported-devices-and-boards">Supported Devices and boards</h2>
<ul>
<li>STM32G041xx, STM32G031xx and STM32G030xx devices</li>
<li>STM32G081xx, STM32G071xx and STM32G070xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section3" aria-hidden="true"> <label for="collapse-section3" aria-hidden="true">V1.2.0 / 05-April-2019 </label>
<div>
<h2 id="main-changes-3">Main Changes</h2>
<h3 id="maintenance-release-and-product-update-1">Maintenance release and Product Update</h3>
<p>First release for STM32G0xx CMSIS introducing <strong>stm32g030xx, stm32g031xx, stm32g041xx</strong> devices.</p>
<p><strong>Additional features</strong></p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;">New CMSIS Drivers files to support STM32G041xx, STM32G031xx, STM32G030xx</td>
</tr>
</tbody>
</table>
<p><strong>Fixed bugs list</strong></p>
<table>
<thead>
<tr class="header">
<th>Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>Correct wrong definition of IS_TIM_TISEL_INSTANCE for STM32G0x0 devices</td>
</tr>
<tr class="even">
<td>Mention bit ADC_CCR_LFMEN as useless in STM32G0, kept for legacy purpose</td>
</tr>
</tbody>
</table>
<h2 id="contents-3">Contents</h2>
<p>CMSIS devices files for stm32g030xx, stm32g031xx, stm32g041xx devices.</p>
<p>CMSIS devices files for stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
<h2 id="known-limitations-3">Known Limitations</h2>
<p><strong>Requirements not met or planned in a forthcoming release</strong></p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;">[MISRAC2012-Rule-8.9_b] Global variable APBPrescTable is only referenced from a single function</td>
</tr>
<tr class="even">
<td style="text-align: left;">Use latest CMSIS V5.4.0</td>
</tr>
</tbody>
</table>
<h2 id="development-toolchains-and-compilers-1">Development Toolchains and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V8.20.2</li>
<li>RealView Microcontroller Development Kit (MDK-ARM) toolchain V5.25</li>
<li>System Workbench STM32 (SW4STM32) toolchain V2.7.2</li>
</ul>
<h2 id="supported-devices-and-boards-1">Supported Devices and boards</h2>
<ul>
<li>STM32G041xx, STM32G031xx and STM32G030xx devices</li>
<li>STM32G081xx, STM32G071xx and STM32G070xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section2" aria-hidden="true"> <label for="collapse-section2" aria-hidden="true">V1.1.0 / 06-February-2019 </label>
<div>
<h2 id="main-changes-4">Main Changes</h2>
<h3 id="maintenance-release-1">Maintenance release</h3>
<p>Maintenance release for <strong>STM32G0xx</strong> devices (stm32g070xx, stm32g071xx, stm32g081xx devices)</p>
<p><strong>Fixed bugs list</strong></p>
<table>
<thead>
<tr class="header">
<th>Headline</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>[Keil] Startup file for Keil generated project contain errors</td>
</tr>
<tr class="even">
<td>[Licenses update] remove html tags in Startup files</td>
</tr>
<tr class="odd">
<td>MISRAC2012 implementation</td>
</tr>
<tr class="even">
<td>Correct undefined reference to `LPUART1_IRQHandler’ for some G0 variants</td>
</tr>
</tbody>
</table>
<h2 id="contents-4">Contents</h2>
<p>CMSIS devices files for stm32g070xx, stm32g071xx, stm32g081xx devices.</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1" aria-hidden="true"> <label for="collapse-section1" aria-hidden="true"> V1.0.0 / 26-October-2018 </label>
<div>
<h2 id="main-changes-5">Main Changes</h2>
<h3 id="first-release">First release</h3>
<p>First official release for <strong>STM32G0xx</strong> devices</p>
<h2 id="contents-5">Contents</h2>
<ul>
<li>CMSIS devices files for STM32G070xx, STM32G071xx and STM32G081xx</li>
</ul>
</div>
</div>
</div>
</div>
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<p>For complete documentation on STM32G0xx,visit: [<a href="http://www.st.com/stm32g0">www.st.com/stm32g0</a>]</p>
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